Removing part of a file name..

[Afrow UK]

I'm using IO to allow users to select a .map file (for my Map-Compiler prog)
but I need the .map bit to be removed afterwards, since I need to use the entered cmd line as x:\path\to\mymap instead of x:\path\to\mymap.map

Otherwise, VIS and RAD compiles will try to compile x:\path\to\mymap.map.bsp, when it needs to be just x:\path\to\mymap.bsp

-Stuart